FreeChainXenon/binutils-gdb
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

PR python/18285

Browse source 
gdb/ChangeLog:

	PR python/18285
	* NEWS: Document new gdb.XMethodWorker.get_result_type method.
	* eval.c (evaluate_subexp_standard) <OP_FUNCALL>: Handle
	EVAL_AVOID_SIDE_EFFECTS for xmethods.
	* extension-priv.h (struct extension_language_ops)
	<get_xmethod_result_type>: New member.
	* extension.c (get_xmethod_result_type): New function.
	* extension.h (get_xmethod_result_type): Declare.
	* python/py-xmethods.c (get_result_type_method_name): New static
	global.
	(py_get_result_type_method_name): Ditto.
	(gdbpy_get_xmethod_result_type): New function.
	(gdbpy_initialize_xmethods): Initialize py_get_result_type_method_name.
	* python/python-internal.h (gdbpy_get_xmethod_result_type): Declare.
	* python/python.c (python_extension_ops): Add
	gdbpy_get_xmethod_result_type.
	* python/lib/gdb/xmethod.py (XMethodWorker): Add get_result_type.
	* valarith.c (value_x_binop): Handle EVAL_AVOID_SIDE_EFFECTS for
	xmethods.
	(value_x_unop): Ditto.
	* value.c (result_type_of_xmethod): New function.
	* value.h (result_type_of_xmethod): Declare.

gdb/testsuite/ChangeLog:

	* gdb.python/py-xmethods.exp: Add ptype tests.
	* gdb.python/py-xmethods.py (E_method_char_worker): Add
	get_result_type method.

gdb/doc/ChangeLog:

	* python.texi (Xmethod API) <gdb.XMethodWorker.get_result_type>:
	Document.
	(Writing an Xmethod): Add get_result_type to example.
This commit is contained in:
Doug Evans 2015-04-29 13:24:21 -07:00
parent 99b2a2dd3c
commit 2ce1cdbf84
18 changed files with 304 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

20
gdb/python/lib/gdb/xmethod.py
View file

@ -101,9 +101,11 @@ class XMethodWorker(object):
invokes the method when GDB wants it to. Internally, GDB first invokes the
'get_arg_types' method to perform overload resolution. If GDB selects to
invoke this Python xmethod, then it invokes it via the overridden
'__call__' method.
'__call__' method. The 'get_result_type' method is used to implement
'ptype' on the xmethod.
Derived classes should override the 'get_arg_types' and '__call__' methods.
Derived classes should override the 'get_arg_types', 'get_result_type'
and '__call__' methods.
"""
def get_arg_types(self):
@ -117,6 +119,20 @@ class XMethodWorker(object):
"""
raise NotImplementedError("XMethodWorker get_arg_types")
def get_result_type(self, *args):
"""Return the type of the result of the xmethod.
Args:
args: Arguments to the method. Each element of the tuple is a
gdb.Value object. The first element is the 'this' pointer
value. These are the same arguments passed to '__call__'.
Returns:
A gdb.Type object representing the type of the result of the
xmethod.
"""
raise NotImplementedError("XMethodWorker get_result_type")
def __call__(self, *args):
"""Invoke the xmethod.